﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Browser;
using SMS.ViewModel.Login;
using SMS.Model;
using System.ComponentModel;
using SMS.ViewModel;
using System.IO.IsolatedStorage;
using System.Runtime.Serialization;
using System.IO;
using System.Runtime;
namespace SMS
{
    public partial class App : Application
    {
        /// <summary>
        /// 
        /// </summary>
        /// 
        public ViewModel_Common_Session objCheckSession;
        /// <summary>
        /// Root Visual Grid.
        /// </summary>
        private Grid rootVisual = new Grid();

        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            #region "for session time out"
            using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForSite())
            {
                if (store.FileExists("SessionInfo.dat"))
                    store.DeleteFile("SessionInfo.dat");

                if (!store.FileExists("SessionInfo.dat"))
                {
                    SessionInfo sessioninfo = new SessionInfo { CurrentLoginDateTime = DateTime.Now, LastVisitedDateTime = DateTime.Now, SessionDuration = 60 };
                    using (IsolatedStorageFileStream stream = store.CreateFile("SessionInfo.dat"))
                    {
                        
                        DataContractSerializer serializer = new DataContractSerializer(typeof(SessionInfo));
                        serializer.WriteObject(stream, sessioninfo);
                    }
                }
            }
            #endregion

            var objLoginMDI = new Views.Login.LoginPage();
            rootVisual.Children.Add(objLoginMDI);
            this.RootVisual = rootVisual;

            #region "for session time out"
            //this.RootVisual.AddHandler(UIElement.MouseLeftButtonDownEvent, new MouseButtonEventHandler(RootVisual_MouseLeftButtonDown), true);
            #endregion
        }
        #region "for session time out"

        public static event Action<bool> OnSessionExpired;
        private void RootVisual_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            //using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForSite())
            //{
            //    if (store.FileExists("SessionInfo.dat"))
            //    {
            //        if (!CheckSessionStatus())
            //        {
            //            if (OnSessionExpired != null)
            //                OnSessionExpired(true);
            //        }
            //    }
            //}
        }
        private bool CheckSessionStatus()
        {
            bool IsSessionValid = false;
            DateTime lastVisitedDateTime;
            SessionInfo objSessionInfo=new SessionInfo();
            using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForSite())
            {
                if (store.FileExists("SessionInfo.dat"))
                {                    
                    using (IsolatedStorageFileStream stream = store.OpenFile("SessionInfo.dat", FileMode.Open, FileAccess.Read))
                    {
                        DataContractSerializer serializer = new DataContractSerializer(typeof(SessionInfo));
                        objSessionInfo = (SessionInfo)serializer.ReadObject(stream);
                        
                    }
                    if (store.FileExists("SessionInfo.dat"))
                        store.DeleteFile("SessionInfo.dat");
                }
            }
            if (objSessionInfo.CurrentLoginDateTime == objSessionInfo.LastVisitedDateTime)
                lastVisitedDateTime = objSessionInfo.CurrentLoginDateTime;
            else
                lastVisitedDateTime = objSessionInfo.LastVisitedDateTime;
            if (lastVisitedDateTime.ToShortDateString() == DateTime.Now.ToShortDateString() && Convert.ToDateTime(lastVisitedDateTime.AddMinutes(objSessionInfo.SessionDuration).ToShortTimeString()) >= Convert.ToDateTime(DateTime.Now.ToShortTimeString()))
            {
                using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForSite())
                {
                    if (!store.FileExists("SessionInfo.dat"))
                    {
                        using (IsolatedStorageFileStream stream = store.CreateFile("SessionInfo.dat"))
                        {
                            DataContractSerializer serializer = new DataContractSerializer(typeof(SessionInfo));
                            objSessionInfo.LastVisitedDateTime = DateTime.Now;
                            serializer.WriteObject(stream, objSessionInfo);
                            IsSessionValid = true;
                        }
                    }
                }
            }
            else
            {
                IsSessionValid = false;
            }


            return IsSessionValid;
        }

        #endregion

        private void Application_Exit(object sender, EventArgs e)
        {
            new AuthenticationModel().AuthenticateUser(LoggedinUserName, string.Empty, false);
        }

        public static bool IsRunning
        {
            get { return !DesignerProperties.IsInDesignTool; }
        }

        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                System.Windows.Browser.HtmlPage.Window.Eval("throw new Error(\"Unhandled Error in Silverlight Application " + errorMsg + "\");");
            }
            catch (Exception)
            {
            }
        }

        public static string LoggedinUserName { get; set; }
        public static string LoggedInTime { get; set; }
        public static SMS.Entities.SalesManDetail CurrentSalesMan;        

        public static Size AppDimension
        {
            get
            {
                return new Size { Height = App.Current.Host.Content.ActualHeight, Width = App.Current.Host.Content.ActualWidth };
            }
        }

        public static void GoBack()
        {
            ViewModel_MainPage.MainPageContext.FrameControl.GoBack();
        }
    }
    [DataContract]
    public class SessionInfo
    {
        [DataMember]
        public DateTime CurrentLoginDateTime { get; set; }
        [DataMember]
        public DateTime LastVisitedDateTime { get; set; }
        [DataMember]
        public int SessionDuration { get; set; }
    }
}
